Can anyone identify the model of this speakers?


I really need experts help!
My audio-friends and me - we cannot determine the model of this speakers. I’ve looked through almost all possible images.
Presumably of German origin, early 90s.
There are no signs inside.
Inside the acoustic: Vifa speakers, Mundorf capacitors, Eagle Calypso wire.
See photos at the following link:
https://www.icloud.com/iclouddrive/06dQIn1O12CFEpuzwMi9WLsWg#acoustics

Thank you very much in advance, Alex
baldaris
Even with an iPhone and a Mac (I have both!) it's still a PITA to get to the pics...gotta be a better way to share pics on this forum...oh, and BTW, don't recognize the speakers...look interesting though...how do they sound?
Thank you for attention. The speakers sound very good, dynamically expressive and very detailed.
I apologize for the inconvenience with the link. I created a new link with photos. and continue to ask for help with the identifying of the acoustics model. Thank you
https://photos.app.goo.gl/vhSULKYV5J8Ez8ay7
They don't look familiar to me. Is that a port on the upper back panel? If so, what it that on the bottom side panel?